IBM B50 - Manual (Page 58)

Step 1540-13
1. Make sure the diagnostic CD-ROM disc is inserted into the CD-ROM drive.
2. Turn off the power.
3. Starting with the last-installed adapter, disconnect one attached device and
cable.
4. Turn on the power.
5. If the Console Selection screen is displayed, choose the system console.
6. After the keyboard indicator begins blinking, press the F5 key on the directly
attached keyboard or the number 5 key on an ASCII terminal keyboard.
7. Enter the appropriate password if you are prompted to do so.
Is the "Please define the System Console" screen displayed?
NO Repeat this step until the defective device or cable is identified or all the
devices and cables have been disconnected.
If all the devices and cables have been removed, then one of the FRUs
remaining in the server is defective.
To test each FRU, exchange the FRUs in the following order:
1. Adapter (last one installed)
2. Riser card
3. System board (see note 3 on page 2-1).
4. Power supply
If the symptom did not change and all the FRUs have been exchanged,
call your service support person for assistance.
If the symptom has changed, check for loose cards, cables, and obvious
problems. If you do not find a problem, return to “Step 1540-1” on
page 2-18, and follow the instructions for the new symptom.
YES The last device or cable that you disconnected is defective.
Exchange the defective device or cable.
Go to " MAP 0410: Repair Checkout " in the Diagnostics Information for
Multiple Bus Systems.
2-28 7046 Model B50 Service Guide